>> start small, maybe you guy 100 shares at 90. then you wait. you buy the next hundred shares, if cat drops to say 81 and you put on the final hundred if the stock sinks below 80, you know, what you got a pretty good basis, basis matters. basis is price. the worst case scenario, cat pilller gas high are and you don't make as much money. and when you decide to sell it, you should unload it incrementally into strength. but, oh, boy, i sold it ul and then had it a big move. eliminate that move. >> now let's talk about a sales. if you're buying a company that's sinking a little lower every day, it could be good because you can buy it can strict or wide scales. for using strict scales, you would buy say a thousand shares of time the stock loses a point.